<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .one{
             background:url("images/bg1.png") no-repeat;
             width:120px;
             height:58px;
             display:inline-block;
             text-align:center;
         }
        .two{
            background:url("images/bg2.png") no-repeat;
            width:120px;
            height:58px;
            display:inline-block;
            text-align:center;
        }
        .three{
            background:url("images/bg3.png") no-repeat;
            width:120px;
            height:58px;
            display:inline-block;
            text-align:center;
        }
        .four{
            background:url("images/bg4.png") no-repeat;
            width:120px;
            height:58px;
            display:inline-block;
            text-align:center;
        }
        .five{
            background:url("images/bg5.png") no-repeat;
            width:120px;
            height:58px;
            display:inline-block;
            text-align:center;
        }
        .one:hover{
            background:url("images/bg6.png");
        }
        .two:hover{
            background:url("images/bg7.png");
        }
        .three:hover{
            background:url("images/bg1.png");
        }
        .four:hover{
            background:url("images/bg2.png");
        }
        .five:hover{
            background:url("images/bg3.png");
        }
    </style>
</head>
<body>
   <a href="#" class="one">五彩导航</a>
   <a href="#" class="two">五彩导航</a>
   <a href="#" class="three">五彩导航</a>
   <a href="#" class="four">五彩导航</a>
   <a href="#" class="five">五彩导航</a>
</body>
</html>